Here are a selection of PDFs for download:

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General 4 Cylinder Loom Info

                 

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Analogue Wibeband Lambda Installation

 

 

BMW S54 Wiring Harness Instructions

 

 

Delta 880 BMW S65/S85 Wiring Harness Instructions

 

 

DeltaDash 7.0 wiring pin out

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Tacho pull resistor (for legacy ECUs + GDI4 only)

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Standard relay wiring